Image Details
Caption: Figure 5.
PSF fitting photometry of the [O i],
r′, and H
α images in Figure
3 of θ
1 Ori
C
1
C
2 with a 44% Strehl theoretical PSF gave a good fit to both binary components in all cases. For 2012 December 12 UT we find
separation is 32.64 ± 0.48 mas and PA is 206
31 ± 0
17. Here we plot this position (in red) against the interferometric orbit of Kraus et al. (2009). The agreement with the predicted
position of
C
2 w.r.t.
C
1 is reasonable given the uncertainty of the orbital solution. However, more VisAO astrometry at this level of accuracy following
this poorly sampled side (20° < PA < 210°) of the orbit over the next few years would certainly lead to a better orbital solution
than is known today.
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